We can immediately imagine what the pilot saw...
Imagination is
antithetical to data collection and analysis. We don't want to
imagine it. That's not data - that's an
interpretation that's been corrupted by the pilot's processing.
If asked - how long, how wide or what colour - the object was, he's already reformed his memories in the shape of a tic-tac. The raw data we needed to process the event is at risk of getting lost behind this imagined
symbol of the real object.
That's a proven phenomenon in cognitive perception.
It is tantamount to a witness seeing this:
and saying "It looked like a big white triangle, with balls on the vertices."
Except that
isn't a big white triangle, it's six discrete objects that form an
illusion of a triangle. But that's been corrupted now, both in the witness' memory and in the imagination of anyone they tell.
(This is not just blowing smoke. Some UAP accounts are of giant back triangles seen against a black sky. Lights in a V shape does
not mean there is anything solid there. That's a corruption of what the witness saw.)
So experienced pilots know
not to draw conclusions or form interpretations. And they sure don't get imaginative.
But this is wasted on you. Even if you've managed to read this far, you have zero interest in understanding the mechanisms and limits of perception and cognition, so it's pointless to argue about it with you.